Text and Data Mining valid from 2018-11-12
Received: 1 August 2018
Accepted: 2 November 2018
First Online: 12 November 2018
Compliance with Ethical Standards
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent and consent for publication were obtained from the patient’s parents.